bug#57015: 29.0.50; macOS: libgccjit was not found: Homebrew libgccjit 12.1.0

[Eli Zaretskii <eliz@gnu.org>]

Resending to the list:

> From: Jacob Faibussowitsch <jacob.fai@gmail.com>
> Date: Sat, 6 Aug 2022 09:56:27 -0400
> 
> > E.g., who says that 'readlink' will always be available on macOS?
> 
> 
> It’s not, see here https://stackoverflow.com/questions/7665/how-to-resolve-symbolic-links-in-a-shell-script. Though I suppose it may not be a big deal for emacs to require that coreutils are installed via brew since this libgccjit check is *already* using brew.
> 
> Other alternatives to resolving paths are:
> 
> $ perl -MCwd -e 'print Cwd::abs_path shift’ /path/to/file
> 
> Or
> 
> $ python -c 'import os, sys; print(os.path.realpath(sys.argv[1]))’ /path/to/file
> 
> Both perl and python (in some form) have always come preinstalled on macOS.
> 
> P.S. I couldn’t immediately see how to cc the mailing list, I replied using the “reply via email to” button here https://lists.gnu.org/archive/html/bug-gnu-emacs/2022-08/msg00589.html so please resend this with proper cc if it doesn’t get attached.
> 
> Best regards,
> 
> Jacob Faibussowitsch
> (Jacob Fai - booss - oh - vitch)
> 
>